The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Ian F Akyildiz - One of the best experts on this subject based on the ideXlab platform.
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atl an adaptive transport layer suite for next generation Wireless Internet
IEEE Journal on Selected Areas in Communications, 2004Co-Authors: Ozgur B Akan, Ian F AkyildizAbstract:The next-generation Wireless Internet (NGWI) is expected to provide a wide range of services including high-speed data and real-time multimedia to mobile users. To realize this expectation, a diverse set of challenges need to be addressed, which are posed by heterogeneous Wireless networking environments within NGWI and the according application requirements. Furthermore, the architectural heterogeneities must be captured dynamically, while mobile users may roam during their connection duration. Current existing transport layer protocols have been developed for a specific network paradigm in mind, e.g., for Wireless local area networks (WLANs), micro/macro Wireless systems, or for satellite systems. Using these existing different transport layer protocols for NGWI to support global roaming of mobile users is not a practical solution due to processing and memory constraints of Wireless terminals. Thus, there is a need for a unified adaptive transport layer protocol suite which can address the architectural heterogeneities for roaming mobile users and achieve the best performance for NGWI. In this paper, a unified adaptive transport layer (ATL) suite is introduced for NGWI which incorporates a new adaptive transport protocol (TCP-ATL) for reliable data transport and a new adaptive rate control protocol (RCP-ATL) for multimedia delivery in the NGWI. According to the requested service type, i.e., reliable data or multimedia, ATL selects the appropriate protocol. Both TCP-ATL and RCP-ATL, deploy a new adaptive congestion control method that dynamically adjusts the protocol configurations according to the current Wireless network paradigms depending where the mobile user currently resides. Hence, the unified adaptive ATL protocol suite achieves high-throughput performance in all of underlying heterogeneous Wireless architectures, i.e., WLANs, micro, macro, or satellite environments. Moreover, the developed adaptive congestion control explicitly takes fairness into consideration. Performance evaluation via simulation experiments reveals that the ATL protocol suite addresses the challenges posed by the NGWI and significantly improves the performance for reliable data and multimedia transport in NGWI.
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adaptnet an adaptive protocol suite for the next generation Wireless Internet
IEEE Communications Magazine, 2004Co-Authors: Ian F Akyildiz, Y Altunbasak, Faramarz Fekri, Raghupathy SivakumarAbstract:Over the last decade, the tremendous growth in the mobile Internet user population has been accompanied by an equally exciting evolution in Wireless data networks. However, quite understandably, the evolution has been distinctly characterized by an increasing degree of heterogeneity along several dimensions such as the access technology, network model, device, and application requirements. This heterogeneity, in turn, imposes a significant challenge on the design of the network protocol stack, and leads to the question: how can the protocol stack at a mobile host cater effectively to the heterogeneous characteristics of the operating environment? In this article we provide an overview of AdaptNet, an adaptive protocol suite for next-generation Wireless data networks. AdaptNet consists of protocol solutions at different layers of the protocol stack addressing several problems, including rate adaptation, congestion control, mobility support, and coding. A common underlying theme in the design of the protocols in the AdaptNet suite is adaptiveness to the operating environment. Through high-level discussions, preliminary results, and pointers to relevant related work, we show how AdaptNet achieves the goal of effectively addressing heterogeneity in next-generation Wireless data networks.
Leonard Barolli - One of the best experts on this subject based on the ideXlab platform.
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a hybrid simulation system based on particle swarm optimization and distributed genetic algorithm for wmns performance evaluation considering normal and uniform distribution of mesh clients
Network-Based Information Systems, 2018Co-Authors: Admir Barolli, Shinji Sakamoto, Leonard Barolli, Makoto TakizawaAbstract:The Wireless Mesh Networks (WMNs) are becoming an important networking infrastructure because they have many advantages such as low cost and increased high speed Wireless Internet connectivity. In our previous work, we implemented a Particle Swarm Optimization (PSO) based simulation system, called WMN-PSO, and a simulation system based on Genetic Algorithm (GA), called WMN-GA, for solving node placement problem in WMNs. In this paper, we implement a hybrid simulation system based on PSO and distributed GA (DGA), called WMN-PSODGA. We analyze the performance of WMNs using WMN-PSODGA simulation system considering Normal and Uniform client distributions. Simulation results show that the WMN-PSODGA has good performance for Normal distribution compared with the case of Uniform distribution.
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performance analysis of simulation system based on particle swarm optimization and distributed genetic algorithm for wmns considering different distributions of mesh clients
Innovative Mobile and Internet Services in Ubiquitous Computing, 2018Co-Authors: Admir Barolli, Shinji Sakamoto, Leonard Barolli, Makoto TakizawaAbstract:The Wireless Mesh Networks (WMNs) are becoming an important networking infrastructure because they have many advantages such as low cost and increased high speed Wireless Internet connectivity. In our previous work, we implemented a Particle Swarm Optimization (PSO) based simulation system, called WMN-PSO, and a simulation system based on Genetic Algorithm (GA), called WMN-GA, for solving node placement problem in WMNs. In this paper, we implement a hybrid simulation system based on PSO and distributed GA (DGA), called WMN-PSODGA. We analyze the performance of WMN-PSODGA by computer simulations considering different client distributions. Simulation results show that the WMN-PSODGA has good performance when the client distribution is Normal compared with the case of Exponential distribution.
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performance evaluation of intelligent hybrid systems for node placement in Wireless mesh networks a comparison study of wmn psohc and wmn psosa
Innovative Mobile and Internet Services in Ubiquitous Computing, 2017Co-Authors: Shinji Sakamoto, Tetsuya Oda, Makoto Ikeda, Kosuke Ozera, Leonard BarolliAbstract:Wireless Mesh Networks (WMNs) have many advantages such as low cost and increased high speed Wireless Internet connectivity, therefore WMNs are becoming an important networking infrastructure. In our previous work, we implemented a Particle Swarm Optimization (PSO) based simulation system for node placement in WMNs, called WMN-PSO. Also, we implemented two intelligent hybrid systems for solving node placement problem in WMNs: PSO and Hill Climbing (HC) based system, called WMN-PSOHC, and PSO and Simulated Annealing (SA) based system, called WMN-PSOSA. In this paper, we evaluate two hybrid simulation systems WMN-PSOHC and WMN-PSOSA. We compare WMN-PSOHC with WMN-PSOSA by conducting computer simulations.
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performance evaluation of wmn psohc and wmn pso simulation systems for node placement in Wireless mesh networks a comparison study
International Conference on Emerging Internetworking Data & Web Technologies, 2017Co-Authors: Shinji Sakamoto, Tetsuya Oda, Makoto Ikeda, Kosuke Ozera, Leonard BarolliAbstract:Wireless Mesh Networks (WMNs) have many advantages such as low cost and increased high speed Wireless Internet connectivity, therefore WMNs are becoming an important networking infrastructure. In our previous work, we implemented a Particle Swarm Optimization (PSO) based simulation system for node placement in WMNs, called WMN-PSO. Also, we implemented a simulation system based on Hill Climbing (HC) for solving node placement problem in WMNs, called WMN-HC. In this paper, we implement a hybrid simulation system based on PSO and HC, called WMN-PSOHC. We compare WMN-PSO with WMN-PSOHC by conducting computer simulations. The simulation results show that the WMN-PSOHC has better performance than WMN-PSO.
Shinji Sakamoto - One of the best experts on this subject based on the ideXlab platform.
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a hybrid simulation system based on particle swarm optimization and distributed genetic algorithm for wmns performance evaluation considering normal and uniform distribution of mesh clients
Network-Based Information Systems, 2018Co-Authors: Admir Barolli, Shinji Sakamoto, Leonard Barolli, Makoto TakizawaAbstract:The Wireless Mesh Networks (WMNs) are becoming an important networking infrastructure because they have many advantages such as low cost and increased high speed Wireless Internet connectivity. In our previous work, we implemented a Particle Swarm Optimization (PSO) based simulation system, called WMN-PSO, and a simulation system based on Genetic Algorithm (GA), called WMN-GA, for solving node placement problem in WMNs. In this paper, we implement a hybrid simulation system based on PSO and distributed GA (DGA), called WMN-PSODGA. We analyze the performance of WMNs using WMN-PSODGA simulation system considering Normal and Uniform client distributions. Simulation results show that the WMN-PSODGA has good performance for Normal distribution compared with the case of Uniform distribution.
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performance analysis of simulation system based on particle swarm optimization and distributed genetic algorithm for wmns considering different distributions of mesh clients
Innovative Mobile and Internet Services in Ubiquitous Computing, 2018Co-Authors: Admir Barolli, Shinji Sakamoto, Leonard Barolli, Makoto TakizawaAbstract:The Wireless Mesh Networks (WMNs) are becoming an important networking infrastructure because they have many advantages such as low cost and increased high speed Wireless Internet connectivity. In our previous work, we implemented a Particle Swarm Optimization (PSO) based simulation system, called WMN-PSO, and a simulation system based on Genetic Algorithm (GA), called WMN-GA, for solving node placement problem in WMNs. In this paper, we implement a hybrid simulation system based on PSO and distributed GA (DGA), called WMN-PSODGA. We analyze the performance of WMN-PSODGA by computer simulations considering different client distributions. Simulation results show that the WMN-PSODGA has good performance when the client distribution is Normal compared with the case of Exponential distribution.
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performance evaluation of intelligent hybrid systems for node placement in Wireless mesh networks a comparison study of wmn psohc and wmn psosa
Innovative Mobile and Internet Services in Ubiquitous Computing, 2017Co-Authors: Shinji Sakamoto, Tetsuya Oda, Makoto Ikeda, Kosuke Ozera, Leonard BarolliAbstract:Wireless Mesh Networks (WMNs) have many advantages such as low cost and increased high speed Wireless Internet connectivity, therefore WMNs are becoming an important networking infrastructure. In our previous work, we implemented a Particle Swarm Optimization (PSO) based simulation system for node placement in WMNs, called WMN-PSO. Also, we implemented two intelligent hybrid systems for solving node placement problem in WMNs: PSO and Hill Climbing (HC) based system, called WMN-PSOHC, and PSO and Simulated Annealing (SA) based system, called WMN-PSOSA. In this paper, we evaluate two hybrid simulation systems WMN-PSOHC and WMN-PSOSA. We compare WMN-PSOHC with WMN-PSOSA by conducting computer simulations.
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performance evaluation of wmn psohc and wmn pso simulation systems for node placement in Wireless mesh networks a comparison study
International Conference on Emerging Internetworking Data & Web Technologies, 2017Co-Authors: Shinji Sakamoto, Tetsuya Oda, Makoto Ikeda, Kosuke Ozera, Leonard BarolliAbstract:Wireless Mesh Networks (WMNs) have many advantages such as low cost and increased high speed Wireless Internet connectivity, therefore WMNs are becoming an important networking infrastructure. In our previous work, we implemented a Particle Swarm Optimization (PSO) based simulation system for node placement in WMNs, called WMN-PSO. Also, we implemented a simulation system based on Hill Climbing (HC) for solving node placement problem in WMNs, called WMN-HC. In this paper, we implement a hybrid simulation system based on PSO and HC, called WMN-PSOHC. We compare WMN-PSO with WMN-PSOHC by conducting computer simulations. The simulation results show that the WMN-PSOHC has better performance than WMN-PSO.
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an integrated simulation system considering wmn pso simulation system and network simulator 3
Broadband and Wireless Computing Communication and Applications, 2016Co-Authors: Shinji Sakamoto, Tetsuya Oda, Makoto Ikeda, Leonard Arolli, Fatos XhafaAbstract:With the fast development of Wireless technologies, Wireless Mesh Net-works (WMNs) are becoming an important networking infrastructure due to their low cost and increased high speed Wireless Internet connectivity. In our previous work, we implemented a simulation system based on Particle Swam Optimization for solving node placement problem in Wireless mesh networks, called WMN-PSO. In this paper, we implement an integrated system considering WMN-PSO and net-work simulator 3 (ns-3). For simulation, we consider two WMN architectures. From simulation results, we found that the total received throughput of I/BWMNis higher than Hybrid WMN and the delay of I/B WMN is lower than Hybrid WMN.
Yaqin Zhang - One of the best experts on this subject based on the ideXlab platform.
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end to end qos for video delivery over Wireless Internet
Proceedings of the IEEE, 2005Co-Authors: Qian Zhang, Wenwu Zhu, Yaqin ZhangAbstract:Providing end-to-end quality of service (QoS) support is essential for video delivery over the next-generation Wireless Internet. We address several key elements in the end-to-end QoS support, including scalable video representation, network-aware end system, and network QoS provisioning. There are generally two approaches in QoS support: the network-centric and the end-system centric solutions. The fundamental problem in a network-centric solution is how to map QoS criterion at different layers respectively, and optimize total quality across these layers. We first present the general framework of a cross-layer network-centric solution, and then describe the recent advances in network modeling, QoS mapping, and QoS adaptation. The key targets in end-system centric approach are network adaptation and media adaptation. We present a general framework of the end-system centric solution and investigate the recent developments. Specifically, for network adaptation, we review the available bandwidth estimation and efficient video transport protocol; for media adaptation , we describe the advances in error control, power control, and corresponding bit allocation. Finally, we highlight several advanced research directions.
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a cross layer qos supporting framework for multimedia delivery over Wireless Internet
PV 2002, 2002Co-Authors: Qian Zhang, Yaqin ZhangAbstract:This paper presents a framework, which provides QoS (Quality of Service) support, for multimedia delivery over Wireless Internet with cross-layer architecture. In this framework, we address the important issues for multiple media, such as audio, video, email, and web traffic, transmitted over Wireless Internet. In order to have efficient QoS support for different types of media, we propose a cross-layer architecture combining the application-level, transport-layer, and link-layer controls. Specifically, dynamical estimation of the varying channel, adaptive application and link-level error control, efficient congestion control, header compression, adaptive scheduling, as well as the QoS-adaptive proxy caching are explicitly discussed in this architecture.
Qian Zhang - One of the best experts on this subject based on the ideXlab platform.
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cross layer qos support for multimedia delivery over Wireless Internet
EURASIP Journal on Advances in Signal Processing, 2005Co-Authors: Qian Zhang, Fan YangAbstract:Delivering multimedia over Wireless Internet is a very challenging task. Multimedia delivery inherently has strict quality-of-service (QoS) requirement on bandwidth, delay, and delay jitter. However, the current Internet can only support best-effort service, which imposes varying network conditions during multimedia delivery. The advent of Wireless networks further exacerbates the variance of network conditions and brings greater challenges for multimedia delivery. To improve perceived media quality by end users over Wireless Internet, QoS supports can be addressed in different layers, including application layer, transport layer, link layer, and so forth. This paper presents a framework, which provides QoS support, for multimedia delivery over Wireless Internet, across different layers. To provide efficient QoS support for different types of media over the best-effort networks, we first propose a cross-layer architecture, which combines the application-level, transport-layer, as well as link-layer controls, and then review recent advances in each individual component. Specifically, dynamic estimation of varying channel and network, adaptive and energy-efficient application and link-level error control, efficient congestion control, header compression, adaptive automatic repeat request (ARQ) and priority-based scheduling, as well as QoS-adaptive proxy caching technologies are explicitly reviewed in this paper.
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end to end qos for video delivery over Wireless Internet
Proceedings of the IEEE, 2005Co-Authors: Qian Zhang, Wenwu Zhu, Yaqin ZhangAbstract:Providing end-to-end quality of service (QoS) support is essential for video delivery over the next-generation Wireless Internet. We address several key elements in the end-to-end QoS support, including scalable video representation, network-aware end system, and network QoS provisioning. There are generally two approaches in QoS support: the network-centric and the end-system centric solutions. The fundamental problem in a network-centric solution is how to map QoS criterion at different layers respectively, and optimize total quality across these layers. We first present the general framework of a cross-layer network-centric solution, and then describe the recent advances in network modeling, QoS mapping, and QoS adaptation. The key targets in end-system centric approach are network adaptation and media adaptation. We present a general framework of the end-system centric solution and investigate the recent developments. Specifically, for network adaptation, we review the available bandwidth estimation and efficient video transport protocol; for media adaptation , we describe the advances in error control, power control, and corresponding bit allocation. Finally, we highlight several advanced research directions.
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a cross layer qos supporting framework for multimedia delivery over Wireless Internet
PV 2002, 2002Co-Authors: Qian Zhang, Yaqin ZhangAbstract:This paper presents a framework, which provides QoS (Quality of Service) support, for multimedia delivery over Wireless Internet with cross-layer architecture. In this framework, we address the important issues for multiple media, such as audio, video, email, and web traffic, transmitted over Wireless Internet. In order to have efficient QoS support for different types of media, we propose a cross-layer architecture combining the application-level, transport-layer, and link-layer controls. Specifically, dynamical estimation of the varying channel, adaptive application and link-level error control, efficient congestion control, header compression, adaptive scheduling, as well as the QoS-adaptive proxy caching are explicitly discussed in this architecture.
